CVE-2026-97995ImportantLocalRevised 21 Oct

virtio_console: do not free control-out buffers on remove

MSRC advisory NVD CVE.org

Assessment

Severity: Important
CVSS base score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U
Impact: Not stated
EPSS · 30-day forecast: No EPSS score collected
Public detection template: No Nuclei template is listed in the current collected catalog
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
Customer action: Required: follow the MSRC remediation guidance
Component: Mariner
Weakness: —
Issued by: Linux
Published: 27 Sep 2026 · September 2026
Last revised: 21 Oct 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: LowAC:L
Privileges required: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: HighC:H
Integrity: HighI:H
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

1 affected product

azl3 kernel 6.6.157.1-1 on Azure Linux 3.0

What changed

Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC
Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC
Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → Unknown: not stated by MSRC · Exploitation detected: Not reported by MSRC → Unknown: not stated by MSRC
29 Oct 2026
Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC
Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (37)

Up to 100 recent field edits are shown; older edits may be outside retention.

6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
29 Oct 2026 · 20:19:26 UTC EPSSNot scored → No EPSS score collected
29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
29 Oct 2026 · 20:19:26 UTC Publicly disclosedNo → Unknown: not stated by MSRC
29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → Unknown: not stated by MSRC
23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
21 Oct 2026 · 20:45:25 UTC Last revised15 Oct 2026 01:55 UTC → 21 Oct 2026 18:40 UTC
18 Oct 2026 · 14:54:30 UTC Link: September 2026/security?release=2026-Sep#cves
15 Oct 2026 · 07:14:54 UTC Last revised13 Oct 2026 16:56 UTC → 15 Oct 2026 01:55 UTC
14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current

Explore global source statements, affected packages and advisory history for CVE-2026-97995. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-97995

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/char/virtio_console.c"
                    ],
                    "versions": [
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "b1f39c2a676698cc64c8e105e08b25111a112ec6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "e03522a990cd2e0f1a736eaa349a9df9ab8541c3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "8f6cfc3eca79b8e108d0823756101e2f4f9d811f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "2e40c69b9c3448b9c6609cd02013da593b2e123b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "177ee901aa2bab02e7f1f8edbb814fd5e386ed62",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "a80c33488e0bbe642ed803b13a4ac8078a70b507",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "f620c40ea6862feed84deb105568b21ec53a7830",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b",
                            "lessThan": "894f98e73983f37354214a89a3a7fd35bf9e3072",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f92b16b815efe8207090a9b5a767618fd89542ca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d2bbfac82b7942afc5d8e564d7087835280df495",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a88e13d9a092fbb772d380944b44eb549ef131fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dd807a784fd36f4136516d5858efb6473dda422c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "47cb14192bcbba3f15b1c3561e05e084e56fdef6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6b1c41a0f7183702abb7a104c6c7e196ad69a6b3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9037306163a6ba5587e4b5ca511ac7be4fb7295b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.16.60",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "3.18.108",
                            "lessThan": "3.19",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.1.52",
                            "lessThan": "4.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.131",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.98",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.39",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.16.7",
                            "lessThan": "4.17",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/char/virtio_console.c"
                    ],
                    "versions": [
                        {
                            "version": "4.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON